6

LM25010, LM25010-Q1

SNVS419E – DECEMBER 2005 – REVISED MAY 2016

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Electrical Characteristics (continued)

Typical values correspond to TJ = 25°C, minimum and maximum limits apply over TJ = –40°C to 125°C, VIN = 24 V, and

RON = 200 kΩ (unless otherwise noted).

(1)(2)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

THERMAL SHUTDOWN

TSD

Thermal shutdown temperature

175

°C

Thermal shutdown hysteresis

20

°C

(1)

All minimum and maximum limits are specified by correlating the electrical characteristics to process and temperature variations while

applying statistical process control.

6.7 Switching Characteristics

Typical values correspond to TJ = 25°C, minimum and maximum limits apply over TJ = –40°C to 125°C, and VIN = 24 V

(unless otherwise noted)

(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RDS(ON)

Buck switch

fSW = 200 mA

TJ ≤ 125°C

0.35

0.8

Ω

TJ ≤ 150°C

0.85

UVLOGD

Gate drive UVLO

VBST - VSW increasing

1.7

3

4

V

UVLOGD hysteresis

400

mV

OFF TIMER

tOFF

Minimum OFF-time

260

ns

ON TIMER

tON – 1

ON-time

VIN = 10 V, RON = 200 kΩ

2.1

2.75

3.4

µs

tON – 2

ON-time

VIN = 42 V, RON = 200 kΩ

500

695

890

ns

Figure 1. Start-Up Sequence